MOM MELANIE WARNED: 
‘NO PEEKING’
AT DAUGHTER DAKOTA’S ‘50’ SEX SCENES!

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50 SHADES OF … “SHOULD I?” With daughter DAKOTA JOHNSON poised to shock with kinky sex vignettes as she stars in “Fifty Shades of Grey,” MELANIE GRIFFITH’s all tied up (yuk, yuk!) in Mom-knots, fighting to keep her solemn vow NEVER to sneak-peek ANY of her offspring’s off-putting slap-and-tickle scenes!

But pals fear Melanie’s poised to break her promise because … SCOOP: Mommie Dearest’s sneaked home an advance DVD of Dakota’s sizzling flick! … NAUGHTY MOMMY! … Spank, SPANK!! … 

Reports My “50” Spy: “Now Melanie’s playing ‘should I, shouldn’t I’ in her head – and it’s driving her crazy! One minute, she’s set to peep … then stops herself. It’s taking lotsa willpower because it IS her daughter’s first starring role in a major movie, so she’s naturally curious – not that Melanie’s a stranger to nude scenes herself. But S&M’s beyond nudity, and Dakota doesn’t want Mom watching! Melanie’s trying hard to respect that, but she’s wavering!”

SO … will Melanie submit to temptation? (And if so, will Dakota’s daddy, studly DON JOHNSON, discipline his ex with a good SPANKING?!) Stay tuned